Unity Mcp

Coplay is an AI agent plugin for Unity that automates tedious game engine tasks using natural language. Built for indie developers, studio engineers, and creators with limited coding experience, it installs via Unity Package Manager (Unity 2022+) and works directly inside the editor. Users describe what they want — from scripting and scene setup to asset management and VFX — and Coplay suggests changes they can preview, edit, or auto-apply with adjustable autonomy levels. Key features include a comprehensive toolset covering asset management, scene manipulation, script editing and compilation, automated level/scene generation, a screenshot tool with focus notification, Eleven Labs audio integration (music, voice, SFX), and a to-do list for focus management. Coplay supports multiple AI models including Claude Opus 4.8, GPT-5.2, and Gemini 3, all accessible from within Unity without leaving the creative flow. Pricing is transparent: credits are charged at LLM provider cost with no markup, and failed tool calls are free. The Free tier offers access to all features and models; Professional ($20/mo) adds $20 of credits/month plus a $4/day safety net for Claude models when balance hits zero. A new Indie plan at $10/mo was announced in June 2026. Enterprise offers airgapped deployments and custom SLAs. Coplay is now part of Aura (Ramen Inc.), which also supports Unreal Engine. Compared to other AI coding assistants, Coplay is uniquely purpose-built for Unity — not a general-purpose chatbot retrofitted for game dev. It provides deep editor integration, per-tool cost transparency, and a developer-friendly pricing model that charges only for successful tool calls.